Lock.



J. H. SHAW.

LOCK.

APPLICATION FILED JUNE I3. I9I4 l/V/T/VESSES.-

TURA/5 y THE MORRIS PETERS ma.4 PHOTOLITHO.. WASHINGTON, a. Cv

JOHN H. SHAW, F NEW HAVEN, CONNECTICUT, ASSIGNOR TO SARGENT & COMPANY,

0F NEW HAVEN, CONNECTICUT,

A GOIRPGRA'IION OF CONNECTICUT.

LOCK.

Original application filed T0 all whom it may concern Be itknown that I, JOHN I-I. SHAW, a citizen of the United States, residing in the city and county of New Haven, State of Connecticut, have invented certain Improvements in Locks, of which the following is a *a full, clear, and exact description.

This invention relates to locks, and more particularly to master-keyed cylinder locks of the type described in my application, Serial No. 640,167, filed July 24, 1911,0f which the present application is a division.

One vof the objects of the invention is the provision of a cylinder lock having self-contained means, operative by an emergency key, but inoperative by a change key, to actuate by means of a suitable auxiliary -or emergency rollback a part of a lock or latch mechanism with which the cylinder lock is associated.

Another object of the invention is to furnish a cylinder key-engaging member permanently carried by the lock and so arranged as to be moved relative to the key plug andthe regular dog or rollback connected with the key plug, by engagement with the emergency key when the latter is inserted into the keyway, said member when so actuated being adapted to operate a part of the latch or lock mechanism at or about they same time that another part of suchv latch or lock mechanism is actuated by the regular dog or rollback, said movable member being inoperative, however, to actuate any part of the latch or lock mechanism when a change key is inserted into the keyway.

'Io these and other ends, the invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the accompanying drawing, Figure 1 is a fragmentary vertical section of a mortise lock equipped with my improvements, showing the change key inserted in the cylinder lock. Fig. 2 is a similar view, showing the emergency key inserted into the cylinder lock. Fig. 3 is a rear end elevation of the cylinder lock, and Figs. 4 and 5 are fragmentary elevations of the lock mechanism of the particular mortise lock illustrated, showing the emergency bit or rollback in different positions.

In the particular* form of my invention Specification of Letters Patent.

lock having a self-containedV Patented May 4, 1915.

July 24, 1911, Serial N o. 640,167. Divided and this application filed June 13,

Serial No. 844,997.

inder 12, a sleeve 18 rotatable therein, a

plug or barrel 14 rotatable in the sleeve, and the usual pin tumblers 15. The key plug `carries at its rear end a dog or rollback 16,

and `the sleeve 13 carries in a similar mannera dog or rollback 17. In the form shown, the movable key-engaging member operative by thel emergency key in the man ner above stated, is constituted by a swinging device or dog 18, which is adapted to be projected rearwardly of the keyway by the emergency key in order to engage a recess 19 in an emergency rollback 20 rotatable on the wall of the case at a point opposite the cylinder lock. The pivoted member 18 normally hangs in the keyway in the position shown in Fig. 1, substantially within the lines of the cylinder lock. The member 18 operates in a suitable opening in the rollback 16, as shown.

When a change key 21 is inserted into the keyway of the lock the pointed end of the key shank will take into a correspondingly formed recess 22 in the inner edge of the pivoted member 18, andconform to said recess without projecting said member-rear-V thereby projected into a position wherein it p extends into the emergency rollback 20 and connects the key plug with said rollback.

The emergency key is usually so bitted as to turn both the key plug and the surroundin sleeve so that it will actuate the rollbacks 16 and 17 together at the same time that it actuates the emergency rollback 20. The change key only turns the key plug and the rollback 16. This is not an essential feature, however, for my improvements are applicable to a cylinderlock in which there is no sleeve surrounding the key plug, and in Which the cylinder lock carriesonly one dogV or rollback, to Wit, a dog or rollback secured' to the rear end of the key plug. The rollback operated by the key plug actuates only part oi the latch or-lock mechanism inthe case '10,and the emergency rollback actuates another part of such mechanism.

When the emergency key is removed from the keyway a spring, 25 carried by the emergency rollback 20 within the recess 19 (which spring engages the pivotedl memberV 18 while the emergencykey is fully inserted ed for yuse with both a change key and a Y master or emergency key, wherein a member auxiliary to the usualrv dogor rollback connected with. the rear end ,or the keyplug is carried by the rear end of theV cylinder vlock and forms a permanentpart of such v cylinder lock, said member being adapted to be moved' relative'to the key plug and -rollback into an. operative position relative to a certain part of the mechanism of a mortise lock when an emergency key 'is inserted into the keyway, withoutl beingso moved when a change key is inserted into the keyway. The auxiliary part orrollback memvbei1 18 is adapted to operate one part of the Y mechanismV of amortise lock,`and the dog or yrollback 16V is adaptedto operate another partv of'suc'h mechanism. 1t will'be understood also that by my' invention the emergency keycan, as shown, be substantially yof thel same overall length vas the change key.

' This dispenses with the use ofjan eXtra long emergency keyl of inconvenient size. Of course,y in statingfthat the emergencygkey andI the change" key are of substantially the same overall length,`1' referto the shank of the key,z'.`ge. that Vportion which enters, p

' gaged and moved by the emergency key as the keyway.

The function of the keyenga'ging mem- I ber and its arrangement relative to the regu-Y lar and emergency rollba'cksmay be variedvr considerably. j YVarious' changes in these and other' re'A spects may be adopted'within the scope ot the invention as'deined, in the claims.

Tvlhat l' claim is: V1. A; cylinderlock having akey plug, said key plug provided with a keyway a rollback ori-theV rea-r end of the cylinder lock,

means of'connection between the key plug and said rollback, whereby the foi-mer turns the latter, and a member in saidV keyway adapted .to be moved' by a key, operating inV an openingl in said' rollback; Vsubstai'itially as described." Y f c y 2. A cylinderlock mechanism having two rollbacks, two keys for said mechanism, both adapted toroperate lone of said rollbacks, and

a key-engaging member actuated by one of said keys only for operating the other rollback; substantially as described.

3. The combination with a cylinder lock havingy a key plug and a dog or rollback, of a member at the rear end of said lock` forming a permanent part thereof, a key insert` ible into the key plug, and formed to engage said member and move itv relatively to the key plugvand rollback, and a 'second keyV vfully insertible into said key plug Withoutmoving said member; substantially asdescribed.

4E. The combination with a cylinder lock having a key plug anda 'dog or rollback connected to Vsaidv key plug, of a'movablev member permanently cqnnecte'd'to and carried'by `the cylinder lock at the rear end thereof, akey insertible into the key plug toengage said. member and move it rela? tively to the key plug andv rollback, a second key insertible into said key plug without moving said member, and; means to return said'member to its initial position afterthe firstv key has been withdrawn from engage-f ment therewith; substantially asdescribed.

45. The combination-'with al cylinder lock having va key plugand-a dog or rollback, of a movable member forming a permanent part of said cylinder'lock and secured therejto -at the rear end thereof, a spring to act on said mov-able member, a key insertible into said key plug and formed to engage said .member and movev itin opposition to said spring, anda second key fullyinsertible into said keyl plug'Y withoutmoving said member; substantially as described.

6. A' cylinder lock having a Vkeylplug with a keyway, a' dog" or rollback connected with the rear endI of the key plug, a change key, inserti-ble into saidkeyway to .rotate said key plug and said rollback, an emergency'key insertible into the l'reyvvay to rotate saidv key plug and saidV rollback, and a membercarried by the cylinder lock adapted to be enthe latter is insertedinto the keyway, said member being immovable by the change key substantially as described'.VV

iio

7. A pin tumbler look having a key plug, y l

said key plug provided With akeyway, a rollback connected ywith thearear Vend of said key plug, and a key-engaging member in the keyway projectable rearwardly by a1 certain key to assume an operative position in respect to ar mortise lock mechanism ;V substantially as described.

.8'.V A pin tumbler lock havinga Vkey plug, Ysaid key plug providedr with a keyway, a

rollback connected With the rear end ofthe Y key plug, a member in said keyway adapted to be moved by a keyand operating in an I as the latter isl inserted into the' keyway;

opening in said rollback, and a spring for returning said member to its initial position when said key is withdrawn from the key plug; substantially as described.

9. A pin tumbler lock having a key plug, said key plug provided with a keyway, a rollback connected With the rear end of the key plug, tivo keys fitting said keyivay, a member movable relative to said rollback and adapted to be shifted relative to said rollback by only one of such keys when the latter is inserted into the keyivay, and a spring for holding said member in engagement with the last named key; substantially as described.

10. 1n a pin tumbler lock, a key plug having a keyvvay, a rollback connected with the rear end of the key plug, a second rollback, and a key-engaging member for actuating the second rollback, movable relative to the first rollback; substantially Vas described.

11. A cylinder lock having a key plug With a keyway, a dog or rollback connected with the rear end of the key plug, a change key insertible into said keyivay to rotate the key plug and said rollback, an emergency key insertible into the keyvvay to rotate the key plug and said rollback, and an auxiliary member projecting into the key- Way and adapted to be engaged and operated by the emergency key to actuate a part of a lock or latch mechanism, said member being inoperative by the change key; substantially as described.

12. A cylinder lock having a casing, a key plug rotatable in said casing and provided With a keyway, pin tumblers in the casing coperating with the key plug, a rollback connected with the rear end of the key plug for actuating a certain part of the mechanism of a mortise lock, an auxiliary member carried by the cylinder lock at the rear end thereof and forming a part of such cylinder lock, said member being movable relative to said rollback for operating another part of the mechanism of a mortise lock, a change key fully insertible into said keyWay to rotate said key plug and rollback Without actuating the second named part of the mortise lock mechanism by means of said auxiliary member, and an emergency key insertible into said keyWay to rotate said key plug and said rollback, and formed to engage said auxiliary member and move it relative to said rollback into a position wherein it will engage the coperating part of the lock mechanism; substantially as described. Y

13. A cylinder lock comprising a casing.y a key plug therein having a keyway, pin tumblers in said casing cooperating with said key plug, a rollback connected with the rear end of the key plug, an auxiliary member at the rear end of the cylinder lock permanently carried by said cylinder lock, but

movable relativek to the key plug and rollback, a change key fully insertible into the keyWay to rotate said key plug and said rollback Without moving said auxiliary member relative to said rollback, insertible into said keyway to Vrotate said key plug and said rollback, and having a part at its rear end to engage said auxiliarymember and move it relative to said roll-V back, and'means to return saidauxiliary- 75 member to its initial position when the emergency key is Withdrawn from engagement therewith; substantially as described.

14. A cylinder lock having a keyyvay, a key insertible into said keyivay, another and 80 different key insertible into said keyvvay, a rollback carried by said lock andk operable by both of said keys, and a member projecting into the rear end of the keyvvay, and movable rearwardly by engagement with one of said keys, as the latter is inserted into the keyway to actuate said rollback, said member being inoperative by said other key when the latter is inserted into the keyway; substantially as described.

15. A cylinder lock having a key plug, said key plug provided With a keyivay, a change key insertible into said keyvvay, an emergency key insertible into said keyvvay,

a rollback operatively connected With said key plug and rotatable by both of said keys, and a member projecting into the'rear end of the keyivay and movable rearwardly by ysaid emergency key into position to operate a part of a mortise lock mechanism, said member being immovable into operative position by said change key; substantially as described.

16. A cylinder lock having a keyivay, a rearwardly movable member in the rear portion of said keyivay, adapted to operate a part outside of said cylinder lock, a key formed to shift said member rearwardly as the key is inserted into the keyvvay, another key fully insertible into the keyvvay Without shifting said member, and a rollback on said cylinder lock operable by both of said keys; substantially as described.

17. A cylinder lock having tvvo keys, a rollback operable by both of said keys, and a coupling member to operate-a part outside of and at the rear of said cylinder lock, operative by one of said keys but not by the other key; substantially as described.

18. A cylinder lock having a keyivay, tvvo keys insertible into said keyvvay, said keys being of substantially the same overall length, and an auxiliaryy member yextending' into the keyvvay andadapted to operate a part of a mortise lock mechanism, said member being operative by one of said keys. but` not by the other of said keys; substantially as described.

19. A cylinder lock having a keyway, a change key insertible into said keyway, an

an emergency key 7o y emergeney key insertible into said keyway `and of substantially no greater overally length than said change key, and a membery extending intosaid keywa'y and adapted to= said cylinder look said member Vbeing inoperative by said1 Voperate f a part outside of change-key but operative by said' emergency key Vsubstantially Vas described.

20; A cylinder lock having a keyway, a key insertible into said different key insertible into said keyway, a

rollback carried. by saidV cylinder look andoperative by both of said'- keys, andv a mem-` y ber extending into the keyway and movable rearwardly by one of said keys but not by kthe-other, said keys being. of substantially the same overall length; substantially as described.

Y Copies of'this patent may be obtained for i've cents each,

Washington, D. 0.7

keyway, another andv 21..A cylinder lock having a key plug, said sleeve surrounding said key plug, pin tumblers cooperating With said keyy plug and key; substantially as described.

In Witness whereof, I have hereunto. set

my hand on the'llth day of June, 1914( JOHN H.V SHAW-- Witnesses: f

ARTHUR MAr'IoNY,V MABEL A. BUss'E.

by addressingtthe Commissioner of Patents,

key plugprovided With a keyway,` a- 20 ai second keyY l 

